The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a complete interface circuit for capacitive MEMS microphones, consisting of the cascade of a preamplifier, a second-order, multi-bit analog SigmaDelta modulator, and a fourth-order, single-bit digital SigmaDelta modulator. The complete interface circuit features a current consumption of 574 muA from a 3.3-V power supply, achieving a signal-to-noise and distortion ratio (SNDR) of...
This paper presents an electronic attenuator for audiometric applications, including an on-chip power amplifier which drives 8 Vppon a 7Ω resistive load. The 24 mm2chip, fabricated in a 2 µm high-voltage CMOS process, achieves 147 dB of dynamic range and 80 dB of signal-to-noise ratio, consuming 33 mA from a ±5 V power supply.
In this paper we present a bandgap circuit capable of generating a reference voltage of 0.54 V. The circuit, implemented in a submicron BiCMOS technology, operates with a supply voltage of 1 V. In the bandgap circuit proposed we use a non-conventional operational amplifier which achieves virtually zero systematic offset, operating directly from the 1 V power supply. The bandgap architecture used allows...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.